Publication
The production of chi(b)(1P) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb(-1) of data collected with the LHCb detector. The chi(b)(1P) mesons are reconstructed in the decay mode chi(b)(1P) -> Gamma(1S)gamma -> mu(+)mu(-)gamma. The fraction of Gamma(1S) originating from chi(b)(1P) decays in the Gamma(1S) transverse momentum range 6 < p(T)(Gamma(1S)) < 15GeV/c and rapidity range 2.0 < y(Gamma(1S)) < 4.5 is measured to be (20.7 +/- 5.7 +/- 2.1(-5.4)(+2.7))%, where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Gamma(1S) and chi(b)(1P) polarizations.
Danick Briand, Nicolas Francis Fumeaux
Matthias Finger, Qian Wang, Yiming Li, Varun Sharma, Konstantin Androsov, Jan Steggemann, Xin Chen, Rakesh Chawla, Matteo Galli, Jian Wang, João Miguel das Neves Duarte, Tagir Aushev, Matthias Wolf, Yi Zhang, Tian Cheng, Yixing Chen, Werner Lustermann, Andromachi Tsirou, Alexis Kalogeropoulos, Andrea Rizzi, Ioannis Papadopoulos, Paolo Ronchese, Hua Zhang, Leonardo Cristella, Siyuan Wang, Tao Huang, David Vannerom, Michele Bianco, Sebastiana Gianì, Sun Hee Kim, Davide Di Croce, Kun Shi, Abhisek Datta, Jian Zhao, Federica Legger, Gabriele Grosso, Anna Mascellani, Ji Hyun Kim, Donghyun Kim, Zheng Wang, Sanjeev Kumar, Wei Li, Yong Yang, Ajay Kumar, Ashish Sharma, Georgios Anagnostou, Joao Varela, Csaba Hajdu, Muhammad Ahmad, Ekaterina Kuznetsova, Ioannis Evangelou, Milos Dordevic, Meng Xiao, Sourav Sen, Xiao Wang, Kai Yi, Jing Li, Rajat Gupta, Hui Wang, Seungkyu Ha, Pratyush Das, Anton Petrov, Xin Sun, Valérie Scheurer, Muhammad Ansar Iqbal, Lukas Layer
Robert Dalang, Carsten Hao Ye Chong